I am in the process of implementing a single sign-on environment, based on LDAP. I am using the openldap, pam and openssh, as distributed with red hat 9.
openldap 2.0.27-8 openssh 3.5p1-6 pam 0.75-48
http://www.openldap.org/
--Quanah
-- Quanah Gibson-Mount Principal Software Developer ITSS/TSS/Computing Systems ITSS/TSS/Infrastructure Operations Stanford University GnuPG Public Key: http://www.stanford.edu/~quanah/pgp.html